- Improvement of the Magnetic Properties of (Nd, Dy)-Fe-B Sintered Magnets by Modification of HD and Annealing Processes
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S. NamKung, Y.H. Lee, M.K. Kim, T.S. Jang
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J Korean Powder Metall Inst. 2010;17(5):359-364.
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DOI: https://doi.org/10.4150/KPMI.2010.17.5.359
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- In an attempt to optimize the magnetic properties of (Nd, Dy)-Fe-B sintered magnets, hydrogenation and post-sintering heat treatment processes were investigated at various hydrogenation temperatures and heat treatment temperatures. The coercivity of (Nd, Dy)-Fe-B sintered magnets hydrogenated at 400°C increased to about 1.2 kOe without any detrimental effect on the remanence. Moreover, the coercivity of the magnets was enhanced further by a consecutive 2nd and 3rd step heat treatment. These results eventually leaded to the reduction of the Dy content in a high coercive (> 30 kOe) (Nd, Dy)-Fe-B sintered magnets, as much as 10%.
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Citations
Citations to this article as recorded by  - Magnetic Properties of (Nd, Dy)-Fe-B Sintered Magnets Mixed with Dy Compounds
S. NamKung, M.W. Lee, I.S. Cho, Y.D. Park, T.H. Lim, S.R. Lee, T.S. Jang
Journal of Korean Powder Metallurgy Institute.2011; 18(1): 29. CrossRef - Effect of Cu Content on Microstructural and Magnetic Properties of a Nd-Fe-B Strip Cast
Song-E Park, Tae-Hoon Kim, Seong-Rae Lee, Dong-Hwan Kim, Seok NamKung, Tae-Suk Jang
Journal of Korean Powder Metallurgy Institute.2011; 18(1): 24. CrossRef
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